化工进展
化工進展
화공진전
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2009年
12期
2185-2188
,共4页
程磊%李仲谨%王磊%诸晓锋%张超武
程磊%李仲謹%王磊%諸曉鋒%張超武
정뢰%리중근%왕뢰%제효봉%장초무
黄原胶%丙烯酰胺接枝共聚物%吸附%Cr~(3+)%热力学
黃原膠%丙烯酰胺接枝共聚物%吸附%Cr~(3+)%熱力學
황원효%병희선알접지공취물%흡부%Cr~(3+)%열역학
xanthan gum -g- acrylamide%adsorption%Cr~(3+)%thermodynamics
以黄原胶为原料,丙烯酰胺为接枝单体,采用微波辐射聚合得到了黄原胶.丙烯酰胺接枝共聚物(XG-g-AM),利用红外光谱仪,X射线衍射仪对其结构进行表征.研究了XG-g-AM对Cr~(3+)的静态吸附行为,并根据吸附等温线研究了吸附热力学性质,结果表明:在研究的浓度范围内,XG-g-AM对Cr~(3+)的吸附行为可用Freundlich等温式进行描述;吸附为自发的、吸热的熵增加过程,升高温度有利于吸附.
以黃原膠為原料,丙烯酰胺為接枝單體,採用微波輻射聚閤得到瞭黃原膠.丙烯酰胺接枝共聚物(XG-g-AM),利用紅外光譜儀,X射線衍射儀對其結構進行錶徵.研究瞭XG-g-AM對Cr~(3+)的靜態吸附行為,併根據吸附等溫線研究瞭吸附熱力學性質,結果錶明:在研究的濃度範圍內,XG-g-AM對Cr~(3+)的吸附行為可用Freundlich等溫式進行描述;吸附為自髮的、吸熱的熵增加過程,升高溫度有利于吸附.
이황원효위원료,병희선알위접지단체,채용미파복사취합득도료황원효.병희선알접지공취물(XG-g-AM),이용홍외광보의,X사선연사의대기결구진행표정.연구료XG-g-AM대Cr~(3+)적정태흡부행위,병근거흡부등온선연구료흡부열역학성질,결과표명:재연구적농도범위내,XG-g-AM대Cr~(3+)적흡부행위가용Freundlich등온식진행묘술;흡부위자발적、흡열적적증가과정,승고온도유리우흡부.
The graft copolymers of xanthan gum and acrylamide (XG-g-AM) were synthesized from xanthan gum by microwave irradiation with acrylamide as graft monomer, and the product was characterized by Fourier thransform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The adsorption behavior of XG-g-AM for Cr~(3+) was investigated, and the adsorption thermodynamics was studied according to adsorption isotherm. The adsorption behavior of XG-g-AM for Cr~(3+) can be expressed by Freundlich adsorption isotherm equation in the temperature range of 298-318 K. The adsorption is a spontaneous and endothermic process with increased entropy, and the increase in temperature would benefit the adsorption.
